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221 protocols using penicillin streptomycin

1

Isolation and Culture of Mesenchymal Stem Cells and Melanoma Cells

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Human placental mesenchymal stem cells (hpMSCs) were obtained from Cellular Engineering Technologies (CET) (Caralville, IA, USA), while B16-F1 (low metastatic variant) and B16-F10 (high metastatic variant) murine skin melanoma cells, were provided by cell services from Cancer Research-UK. NIH-3T3 murine healthy fibroblasts were obtained from Dr. Antonio de la Vieja’s group (Instituto de Salud Carlos lll). hpMSCs were cultured in Dulbecco’s modified Eagle’s medium (DMEM; Biowest, France) supplemented with 5 μg mL−1 of FGF-2 growth factor (PeproTech, Cranbury, NJ, USA), with 10% of fetal bovine serum (FBS, GIBCO, Waltham, MA, USA), 1% penicillin/streptomycin and 1% amphotericin (Biowest, France) and maintained at 37 °C in a 5% CO2-humidified atmosphere under hypoxic conditions (3% O2). For culturing B16-F1, B16-F10, and NIH-3T3 cells, DMEM with 10% of FBS (GIBCO), supplemented with 1% penicillin/streptomycin and 1% amphotericin (Biowest, France) was used. Finally, monocytes were cultured in RMPI Medium 1640 (Biowest, France) supplemented with 10% FBS (GIBCO), 1% penicillin/streptomycin and 1% amphotericin (Biowest, France). B16-F1, B16-F10 and NIH-3T3 cells were maintained under normoxic conditions.
To obtain culture media free of EVs, they were depleted from serum by ultracentrifugation at 100,000× g for 8 h at 4 °C.
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2

Establishing Breast Cancer and Normal Cell Lines

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Breast cancer cell lines MCF-7 (American Type Culture Collection [ATCC]: HTB-22) and SK-BR-3 (ATCC: HTB-30) were maintained in Dulbecco's modi ed eagle medium (DMEM; BI, 01-355-1A) and McCoy's 5A modi ed medium (BI, 01-075-1A) supplemented with 10% fetal bovine serum (FBS; Stem Cell, 04F11678) and 1% penicillin/streptomycin (Biowest, S12204L0018) in an incubator at 37 o C with 5% CO 2 . MCF-12A (ATCC: CRL-10782) normal breast cells were maintained in DMEM supplemented with Ham's F12 nutrient mixture, 10% FBS (Stem Cell, 04F11678), 1% penicillin/streptomycin (Biowest, S12204L0018), 20 ng/mL of epidermal growth factor (Genetropin, P zer), 0.01 mg/mL of insulin (Sigma, 16634), and 500 ng/mL of hydrocortisone (Gadexon 8 mg, MSpharma) in an incubator at 37 o C with 5% CO 2 . NK-92 (ATCC: CRL-2407) cells were cultured in TexMACS GMP medium (Miltenyi Biotec, 170-076-309) supplemented with 10% FBS (Stem Cell, 04F11678), 1% penicillin/streptomycin (Biowest, S12204L0018), and 500 IU of interleukin (IL)-2 (Proleukin, Novartis) in an incubator at 37 o C with 5% CO 2 .
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3

Cell Culture Conditions for Colorectal Cell Lines

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NCM460 and SW480 cells were grown in Roswell Park Memorial Institute (RPMI) 1640 medium with stable glutamine (Biowest, Nuaillé, France) supplemented with 1% penicillin-streptomycin (Biowest, Nuaillé, France) and 10% heat-inactivated fetal bovine serum (FBS; Gibco, Invitrogen, Waltham, Massachusetts, USA); RKO cells were grown in Dulbecco’s Modified Eagle’s Medium (DMEM) High Glucose (Biowest, Nuaillé, France) supplemented with 1% penicillin-streptomycin (Biowest, Nuaillé, France) and 10% heat-inactivated FBS (Gibco, Invitrogen, Waltham, MA, USA). HCT116 cells were grown in McCoy’s 5A Medium (Biowest, Nuaillé, France) supplemented with 1% penicillin-streptomycin (Biowest) and 10% heat-inactivated FBS (Gibco, Invitrogen, Nuaillé, France). All cell lines were plated onto 25 cm3 tissue culture flasks, maintained in a humidified incubator with 5% CO2 at 37 °C.
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4

Umbilical Cord MSC Treatment Protocols

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Human umbilical cord MSCs were obtained from the IdISBa Biobank. Their use was approved by its Ethics Committee (IB1955/12BIO). MSCs were cultured at 37°C and 5% CO2, using Dulbecco’s Modified Eagle Medium (DMEM)–low glucose (Biowest) with 100 μg/ml penicillin-streptomycin (Biowest) and 20% foetal bovine serum (FBS) embryonic stem cells tested (Biowest). Half of the medium was changed every three days.
For treatment, 30,000 cells/cm2 were seeded, at confluence, two PBS washes were performed and treated: Control (PBS), PL (2.6 μg/cm2 of PL), UC-EVs (2.6 μg/cm2 of UC isolated EVs, equivalent to 3.5 × 106 part/cm2), low dose (LD)-SEC-EVs (3.5 × 106 part/cm2 of SEC isolated EVs), and high dose (HD)-SEC-EVs (3.0 × 1010 part/cm2 of SEC isolated EVs). The treatment of UC-EVs was normalized by the amount of proteins used in the PL group, which was set in preliminary studies (data not shown). For LD-SEC-EVs, the same amount of particles as UC-EVs was used. Finally, a 50-fold amount of proteins versus PL was used for the HD-SEC-EV treatment.
Treatments were given in DMEM Low Glucose (Biowest), 100 μg/ml penicillin-streptomycin, and 1% FBS-EVs depleted by centrifugation at 120,000 xg for 18 hours at 4°C. Medium and treatments were refreshed every three days.
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5

Culture of Pancreatic Cancer Cell Lines

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Pancreatic cancer cell lines PANC-1 and MIA PaCa-2 and normal cell line (L-929) were purchased from the Korean Cell Bank (Seoul, Republic of Korea). PANC-1 and MIA PaCa-2 cells were cultured with DMEM high glucose containing 10% FBS and 1% penicillin/streptomycin (Biowest, Nuaillé, France). L-929 cells were grown using RPMI 1640 media supplemented with 10% fetal bovine serum (FBS), 2 μM L-glutamine, and 10,000 U/mL of penicillin/streptomycin (Biowest, Nuaillé, France). Cells were incubated at 37 °C and humidified in 5% CO2 conditions (MCO-15AC, Sanyo, Osaka, Japan). Cell subculture was conducted at regular intervals of 2–3 days.
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6

Culturing 293T and K562 Cell Lines

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293T Cells (CRL11268; American Type Culture Collection; Rockville, MD, USA) were maintained in Dulbelcco’s Modified Eagle’s Medium (DMEM, Thermo Fisher Scientific, Waltham, MA, USA) with GlutaMAXTM supplemented with 10% Foetal Bovine Serum (FBS, Biowest, Nuaillé, France) and 1% penicillin/streptomycin (Biowest) at 10% CO2 and 37 °C. The human cell line K562 (lymphoblast from bone marrow chronic myelogenous leukaemia, CCL-243) was obtained from ATCC (Manassas, Virginia, USA), and maintained in RPMI media (Biowest), supplemented with 10% FBS and 1% penicillin/streptomycin at 5% CO2 and 37 °C.
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7

Cultivating Vero E6 and HeLa Cells

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Vero E6 cells (CRL-1586, ATCC, Manassas, VA, USA) were cultivated in Dulbecco’s modified eagle’s medium (DMEM, Biowest, Nuaillé, France), 10% fetal calf serum (FCS, c.c.pro, Oberdorla, Germany), 1% sodium pyruvate (Sigma, Steinheim, Germany), 1% non-essential amino acids (NEAA, Biowest) and 1% penicillin/streptomycin (Biowest). For propagation of Hela cells (ACC 57, DSMZ, Braunschweig, Germany), DMEM was supplemented with 10% FCS, 1% NEAA, 1% penicillin/streptomycin and 1% L-Glutamin (Biowest). Both cell lines were incubated at 37 °C and 5% CO2 in a humidified atmosphere.
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8

Culturing Neuroblastoma and Commonly Used Cell Lines

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SK-N-SH neuroblastoma cells (ATCC® HTB-11™) were cultured under standard conditions (37 °C, 5% CO2) in 90% Minimum Essential Medium (MEM) (Eagle) with Earle’s balanced salt solution (BSS) (Biowest, Nuaillé, France) and Fetal Bovine Serum (FBS) (Thermo Fisher Scientific, Waltham, MA, USA) to a final concentration of 10%, 2 mM l-glutamine, 1.5 g/L sodium bicarbonate, 0.1 mM non-essential amino acids, 1 U μg−1 antibiotics (penicillin/streptomycin), and 1.0 mM sodium pyruvate (Biowest, Nuaillé, France). HEK293 (ATCC® CRL-1573™), HeLa (ATCC® CRM-CCL-2™) and MCF-7 (ATCC® HTB-22™) cell lines were grown in Dulbecco’s Modified Eagle Medium (Biochrom Gmbh, Berlin, Germany), supplemented with 10% Fetal Bovine Serum (Thermo Fisher Scientific, Waltham, MA, USA), 2 mM l-glutamine, 0.5 mM sodium pyruvate, and 1% Penicillin-Streptomycin (Biowest, Nuaillé, France) in T-75 flasks (Sarstedt AG & Co. KG, Nümbrecht, Germany). Subcultivation was done in a 1:10 ratio. Cells were detached from culture flasks by treatment with trypsin-EDTA for 3–10 min. After detachment, they were resuspended in the culture medium to inactivate any remaining trypsin activity. After centrifugation for 5 min (1000 rpm), they were resuspended in the medium at concentrations of 106, 2 × 106, and 4 × 106 cells/mL.
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9

Cancer Cell Culture Protocols

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H1299 cancer cells were grown in RPMI-1640 medium supplemented with 2 mM L-glutamine, 100 IU/ml penicillin/streptomycin and 10% fetal bovine serum (FBS; Biowest USA). HAP1 and HAP1shmt2KO cells were obtained from Horizon Discovery Ltd., Cambridge, UK and maintained in IMDM medium (Gibco) supplemented with 100 IU/ml penicillin/streptomycin and 10% FBS (Biowest USA). Minimal medium (MEM) formulation and MEM supplementations have been previously reported (21 (link)).
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10

Cell Culture Protocol for Various Cell Lines

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K562 cells were grown in ISCOVE medium (GIBCO, Waltham, MA, USA) supplemented with 10% fetal bovine serum (FBS) (Biowest, Nuaillé, France) and 1X penicillin-streptomycin (Biowest). MCF-7, MCF10A, and HEK-293T cells were cultivated in DMEM (Biowest) medium containing 10% FBS with 10% fetal bovine serum (GIBCO) and 1X penicillin-streptomycin (Biowest). Culture conditions were 37 °C and 5% CO2.
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